Function encrypt_bind_inner 

pub fn encrypt_bind_inner(
    perm_auth_key: &[u8; 256],
    msg_id: i64,
    nonce: i64,
    temp_auth_key_id: i64,
    perm_auth_key_id: i64,
    temp_session_id: i64,
    expires_at: i32,
) -> Vec<u8> 

Build the encrypted_message bytes for auth.bindTempAuthKey.